Light engine device

ABSTRACT

A light Engine device includes a base, a light source module, a light reflecting element, an optical module and a sleeve. The light source module has a light-emitting diode unit and a substrate. The light reflecting element has a first opening, a cup body and a second opening. The optical module has an interface portion and a lens portion. The sleeve has a first port, a sleeve body and a second port. The light emitting diode unit generates a light beam, and the emitted light pattern and light intensity are regulated by the first optical effect and second optical effect.

BACKGROUND

1. Technical Field

The present invention relates to a lighting device, particularly to alight engine device having low power loss and high luminous efficiency.

2. Related Art

Since the light emitting diode has the advantage of low energyconsumption, high luminous efficiency and long usage life, now there areso many illumination companies which replace other traditionalillumination system with the light emitting diode lighting system, suchas incandescent bulb, fluorescent bulb, or traditional tungsten filamentbulb.

However, mostly the illumination companies design the products bytechnology orientation, and there is no such a standard among all theillumination companies. Therefore, even though the illuminationcompanies have their own techniques, the market size of the illuminationindustry cannot be expanded under the condition that the standard of theproducts cannot be united.

The light emitting diode illumination system is created by assemblingdifferent parts together. Generally speaking, the illumination systemincludes a light engine module, an optical component, and a powersupply. When assembling an illumination system, the manufacturer usuallypurchases every single part from different suppliers, and then assemblesall the parts together. However, purchasing parts from differentsuppliers would result in various part standards that is hard tointegrate in order to make a functional system, and manufacturing theillumination system in this way cannot make the illumination efficient.

In view of the foregoing problem, from 2010, an alliance “ZHAGA” isdeveloped. The alliance establishes a light engine platform, and sets anopen standard which includes standard such as standard platform andunited specification.

The light engine specification established by the ZHAGA is primarilydesigned based on the traditional lamp device. Nevertheless, the modernlight engine mainly combines a light source of a light emitting diodewith a light collecting device to regulate the light direction.Therefore, the light engine cannot take full advantages of highdirectional and small light emitting area of the light emitting diode.

In view of this, the present invention provides a light engine device tosolve the drawback of the conventional technique.

BRIEF SUMMARY

The present invention provides a light engine device, by which the lightgenerated from the light emitting diode can be treated by a firstoptical reaction and a second optical reaction to reach the effect oflow energy consumption and high efficiency light guiding.

Moreover, due to the aforementioned light engine device, the lightintensity generated by the light emitting diode can be increased and thelight pattern of the light emitted from the light emitting diode can beeasily regulated.

In order to achieve the aforementioned purpose, the present inventionprovides a light engine device, including a base, a light source module,a light reflecting element, an optical module and a sleeve. The lightsource module is provided on one side of the base. The light sourcemodule has a light emitting diode unit and a substrate. The lightemitting diode unit is provided on one side of the substrate. The lightreflecting element is provided on the same side as the light emittingdiode unit of the light source module. The light reflecting element hasa first opening, a cup body and a second opening. The first openingaccommodates the light emitting diode unit. The first opening and thesecond opening are formed on the opposed sides of the cup body. Thediameter of the second opening is larger than that of the first opening.This optical module has an interface portion and a lens portion. Oneside of the interface unit stacks on and connects to the second openingand the lens portion is formed on the other side of the interfaceportion. The sleeve has a first port, a sleeve body and a second port.The first port is fixed to the base. The sleeve body covers the lightsource module, the light reflecting element and at least a portion partof the optical module. The light beam generated from the light emittingdiode forms a reflected light beam through a first optical reflection bythe light reflecting element, and the reflected light beam forms one ofthe effect from a focusing action and a diffusion through a secondoptical reflection by the lens portion.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features and advantages of the various embodimentsdisclosed herein will be better understood with respect to the followingdescription and drawings, in which like numbers refer to like partsthroughout, and in which:

FIG. 1 is a disassembling schematic view of an embodiment of the lightengine device according to the present invention;

FIG. 2 is a schematic view of another embodiment of the base of thelight engine device according to the present invention;

FIG. 3 is an assembling schematic view of each parts of FIG. 1;

FIG. 4 is a schematic view of another embodiment of the cup body of thelight engine device according to the present invention;

FIG. 5 is a schematic view of a light route of the embodiment of thelight engine of FIG. 4; and

FIGS. 6 a-6 e is a chart of experiment effect of the embodiment of thelight engine.

DETAILED DESCRIPTION

Please refer to FIG. 1. The light engine device 10 includes a base 12, alight module 14, a light reflecting element 16, an optical module 18 anda sleeve 20.

In the present embodiment, the base 12 has a first cylinder 122 and asecond cylinder 124. Since the peripheral of the first cylinder 122 islarger than the peripheral of the second cylinder 124, a ladder shapeprotrusion is formed on the first cylinder 122. The first cylinder 122and the second cylinder 124 are made of high thermal conductivematerial, which can swiftly dissipate the heat generated by the lightsource 14 and/or light reflecting element 16. The high thermalconductive material can be metal, ceramics, graphite or diamond.

It should be noted that people skilled in the art will appreciate thatthe base 12 can further include a driving circuit 126 and/or aconnecting terminal 128. FIG. 2 illustrates a side view of the base 12of the light engine device 10 according to another embodiment. In FIG.2, the driving circuit 126 can be used to drive the light source module14 to generate a light beam (LB). The connecting terminal 128 can beused to connect a traditional lamp base.

Referring to FIG. 1, the light source module 14 is provided above thebase 12. The light source module 14 includes a light emitting diode unit142 and a substrate 144.

The light emitting diode unit 142 is provided above the substrate 144.In the present embodiment, the light emitting diode unit 142 can includea single light emitting diode or a plurality of chip-on-board lightemitting diodes. The chip-on-board light emitting diode is a lambertianplanar light source, which has high luminous power and big luminousangle such as from 15 degrees to 140 degrees.

The light reflecting element 16 reflects the light beam LB generatedfrom the light emitting diode unit 142 to generate another light beamLB′ by a single optical reflection. The material of the light reflectingunit 16 is metal.

The light reflecting element 16 includes a first opening 162, a cup body164, and a second opening 166. The light reflecting element 16 isprovided on the top of the light source module 14. The first opening 162is provided above the light emitting diode unit 142 to accommodate thelight emitting diode unit 142. The first opening 162 and the secondopening 166 are formed on the opposite ends of the cup body 164,respectively. In the present embodiment, the diameter of the secondopening 166 is larger than that of the first opening 162, therebyforming an annular inclined surface for cup body 164.

It is noted that the diameter of the first opening 162 and the secondopening 166 can be regulated as needed, and a specific luminous angle ofthe light beam LB can be made to provide a first optical reaction.

In the present embodiment, the diameter of the first opening 162 isapproximately equal to the diameter of the light emitting diode unit142, and the first opening 162 can accommodate the light emitting diodeunit 142. In another embodiment, the diameter of the first opening 162can also be larger than the diameter of the light emitting diode unit142.

The optical module 18 can focus or diffuse the light beam LB′ from thelight reflecting element 16, and the light beam LB from the lightemitting diode unit 142, which is not reflected by the light reflectingelement 16. That is to say, the light module 18 can result in very goodeffect on changing the light route. The material of the optical module18 can be Poly methyl methacrylate (PMMA), polycarbonates (PC) orsilicon dioxide.

The optical module 18 includes an interface portion 182 and a lensportion 184. The interface portion 182 and the lens portion 184 can beseparated parts or an integrated single part. The optical module 18stacks on the second opening 166 to make the bottom part of theinterface portion 182 connect the second opening 166, and also forms thelens portion 184 on the top of the interface portion 182. In anotherembodiment, the interface portion 182 has an annular inclined surfacewhich extends from the outer edge of the interface portion 182 to thelight reflecting element 16. The lens portion 184 can be an asphericlens structure or a Fresnel lens structure, which can be regulated asneeded. In the present embodiment, the lens portion 184 is bulletshaped.

Therefore, in the present invention, the light reflecting element 16collects the light beam LB from the light emitting diode unit 142, andthe light route of the light beam LB is unified to form the light beamLB and LB′ which has relatively narrower light route. The optical module18 is used to focus and diffuse the light beam LB and LB′ to formdifferent light distribution curves. In other words, by regulating thelight emitting diode unit 142, the light reflecting element 16 and theoptical module 18, dynamically quick switching according to differentenvironments can be achieved.

In another embodiment, a silicon ring (not shown in figures) can beprovided between the light reflecting element 16 and the optical module18. By this arrangement, it is not only increasing the compactness ofthe light reflecting unit 16 and the optical module 18, but alsoimproving the water-proofing characteristic of the whole light enginedevice 10.

The sleeve 20 includes a first port 202, a sleeve body 204 and a secondport 206. In the present embodiment, a ladder shape annular cover isformed on the outer side of the first port 202, but not limited thereto.The material of the sleeve 20 can be metal or plastic.

The first port 202 is fixed to the base 12 to allow the ladder annularcover to cover the ladder shape protrusion. The sleeve body 204 coversthe light source module 14, the light reflecting element 16 and theoptical module 18. The lens portion 184 protrudes out of the second port206. In another embodiment, the lens portion 184 can also be totallycovered by the sleeve 20.

Referring to FIG. 3, the lens portion 184 is provided on the top part ofthe light engine device 10. The lens portion 184 has a bullet shapedlook and protrudes out of the second port 206. The bottom of the lightengine device 10 is a round base.

Referring to FIG. 4, the cup body 164 includes a reflection layer 1642.The reflection layer 1642 is formed on the inner wall of the cup body164 to strengthen the light intensity of parallel light. For example,the material of the reflection layer 1642 can be at least one selectedfrom the group of Al₂O₃, YBO₃, BaSO₄, TiO₂, Ca-pyrophosphate,CA-halophosphate and MgO.

Referring to FIG. 5, the light emitting diode unit 142 on the base 12generates light beam LB, and the light beam LB with small lightradiation angle directly passes through the light reflecting element 16to reach the interface portion 182. The light beam LB with large lightradiation angle is emitted to the cup body 164, and another parallellight beam LB′ is generated by the cup body 164. The two lights beam LB,LB′ are emitted to the interface portion 182 and further emitted tooutside of the light engine 10 through the lens portion 184.

FIG. 6 a shows the light intensity of the light generated by the lightemitting diode unit after being driven. As shown in FIG. 6 a, the middlepart of the light has the strongest light intensity, which is about 350cd/klm.

In FIG. 6 b, the light intensity increases to 600 cd/klm after the lightpasses through the light reflecting element 16.

In FIG. 6 c, the light intensity increases to 680 cd/klm after the lightdirectly passes through the optical module 18.

In FIGS. 6 b and 6 c, the light intensity only doubles after the lightgoes through one optical reaction.

In FIG. 6 d, the light intensity increases up to 2200 cd/klm, which isabout 6-7 times compared to FIG. 6 a, after the light goes through thefirst optical reaction and the second optical reaction provided by thecombination of light reflecting element 16 and optical module 18.

Besides, the optical module 18 can control the light pattern of theemitted light to form rectangle shape light pattern for long distanceillumination, which cannot be achieved by traditional light emittingdiode lamps. The light pattern is as shown in FIG. 6 e.

Although the present invention has been described with reference to theforegoing preferred embodiments, it will be understood that theinvention is not limited to the details thereof. Various equivalentvariations and modifications can still occur to those skilled in thisart in view of the teachings of the present invention. Thus, all suchvariations and equivalent modifications are also embraced within thescope of the invention as defined in the appended claims.

What is claimed is:
 1. A light engine device comprising: a base; a lightsource module provided on one side of the base, the light source moduleincluding a light emitting diode unit and a substrate, the lightemitting diode unit being provided on one side of the substrate; a lightreflecting element provided on the same side as the light emitting diodeunit of the light source module, the light reflecting element having afirst opening, a cup body and a second opening, wherein the firstopening accommodates the light emitting diode unit, the first openingand the second opening are formed on opposed sides of the cup body, andthe diameter of the second opening is larger than that of the firstopening; an optical module having an interface portion and a lensportion, one side of the interface portion stacking on and connecting tothe second opening, the lens portion being formed on the other side ofthe interface portion; and a sleeve having a first port, a sleeve bodyand a second port, the first port being fixed to the base, the sleevebody covering the light source module, the light reflecting element andat least a portion of the optical module, wherein a light beam generatedfrom the light emitting diode forms a reflected light through a firstoptical reflection via the light reflecting element, and the reflectedlight beam is focused or diffused through a second optical reflectionvia the lens portion.
 2. The light engine device as claimed in claim 1,wherein the light emitting diode unit is single light emitting diode ora plurality of chip-on-board light emitting diodes.
 3. The light enginedevice as claimed in claim 1, wherein the lens portion protrudes out ofthe second port.
 4. The light engine device as claimed in claim 1,wherein the base is composed of metal, ceramics, graphite, or diamond.5. The light engine device as claimed in claim 1, wherein the lightreflecting element is composed of a metal material.
 6. The light enginedevice as claimed in claim 5, wherein the light reflecting elementcomprising a reflection layer, and the reflection layer is formed on aninner wall of the cup body.
 7. The light engine device as claimed inclaim 5, wherein the material of the reflection layer is at least oneselected from a group of Al2O3, YBO3, BaSO4, TiO2, Ca-pyrophosphate,CA-halophosphate and MgO.
 8. The light engine device as claimed in claim1, wherein the optical module is composed of Polymethylmethacrylate(PMMA), Polycarbonate (PC), or SiO2.
 9. The light engine device asclaimed in claim 1, wherein the lens portion is an aspheric lensstructure or a Fresnel lens structure.
 10. The light engine device asclaimed in claim 1, wherein the sleeve is made of metal or plastic. 11.The light engine device as claimed in claim 1 further comprising asilicon ring provided between the light reflecting element and theoptical module.